Door check and spring.



C. ROGERS.

. DOOR CHECK AND SPRING. APPLIcAnoN man ocr.14. |913. .nsu'swiu D Ec. e. 191s.

Patented July 11, 1916.`

l 2 SHEETS-SHEET l.

s l; im 1 1 11 1 1 1111 11 1 1 1 1 1 n 11 n .-111 niv-1 ms Nonna culs In, rnaroil ma. ulmsmn. n. u,

` C. T. R n

4 DOOR CHECK RING. APPLICATION man ocr. 14. NzwED nec.

, 6 |915 1, 1 90,324. Patented July 11, 1916. 2 SHEETS-SHEET 2.

CLARENCE T. ROGERS, 0F NEW YORK, N. Y.

DOOR CHECK AND SPRING.

Specification of Letters Patent.

Patented July 11, 1916.

Application led October 14, 1913,Serial No. 795,159. Renewed December 6, 1915. Serial No. 65,421.

T0 all Iwhom t may concern:

Be it known that I, CLARENCE T. ROGERS, of the city, county, and State of New York, have invented a new and useful Improvement in Door Checks and Springs, of which the following is a full, clear, and exact description.

My invention relates to improvements in door checks and springs, and the object of my invention is to produce a combination door check and spring which can be held in the top of a door and connected with the door frame, so that the spring will serve to close the door and the check will serve the usual functions of a check to prevent the door from slamming violently.

My invention is intended to produce a simple inexpensive mechanism, hardly any part of which will appear in sight, but which is applicable to any usual form of swinging door whether the door swings to one side only of the doorway, or to both sides.

My invention is also intended to provide a simple means for holding the door open if desired, or for permitting it to close automatically and easily but positively.

Reference is to be had to the accompanying drawings forming a part of this specilication, in which similar reference characters indicate corresponding parts in all the views.

Figure 1 is a broken plan view of my improved apparatus as applied to a door and frame. Fig. 2 is an enlarged detail section of the spring and check in position in the top of the door. Fig. 3 is a detail of the valve plug used in the check. Fig. 4 is an end View of the valve plug. Fig. 5 is a broken sectional plan of the extensible arm connecting the door apparatus with the frame. Fig. 6 is a detail of the slide block forming a part of the aforesaid connection. Fig. 7 is a bottom plan view of the check piston. Fig. 8 is a detail view showing a slightly modified arrangement of the meeting cams of the door check. Fig. 9 is a sectional side elevation of a slightly modified form of the connecting apparatus between the door mechanism and the frame. Fig. 10 is an enlarged detail perspective view of a modified form of one member of the extensible arm. Fig. 11 is a broken detail view of the second member of the extensible arm, showing the slide or friction block in one position. Fig. 12 is a view similar to Fig. 11 but showing the slide or friction block in a second position. Fig. 13 is a sectional view showing the sliding connection between the extensible arm and. the door frame, and Fig. 14 isa top plan view. of

the plate forming a part of the connection with the door frame.

The door frame 10 can be of any usual style, and the door 11 is hinged to swing in .the door frame in the customary or` any aforesaid parts in place, the face plate being held by screws 16. Within the barrel 12 is a. stiff spiral spring 17, and any usual type of spring can be used. The lower end of the spring is secured to the bottom of the cylinder or to some fixed abutment, the abutment in this case being the squared end 18 which rises 'from the bottom 19, and the latter is provided preferably with numerous holes 20, adapted to receive the binding screw 21 which extends through the wall of the cylinder 12, so that by turning the bottom or nut 19 and adjusting the screw 21, the tension of the spring 17 can be regulated. The bottom or nut 19 is held in place by the plate 22, which has pins 28 extending into the aforesaid member 19. The top of the spring connects with a boss 24 on the under side of the head 25 which fits in the' top of the barrel 12, and to which is rigidly secured a pinion or gear 26 which meshes with a gear 45 t0 be hereafter referred to, and "which forms a part of the check. The

top of the head 25 is squared preferably as shown at 27 in Fig. 1, and extends into a correspondingly shaped hole in one member 28 of the extensible arm which forms a connection with the door frame, and the mem'- ber 28 is held to the head 25 by screws 29. Thus the swinging of thearm and memh4 ber 28 will serve to turn the spring 17 in one direction, and of course the reaction of the spring will act on the arm or member 28.

The member 28 is longitudinally slotted as shown at 30, the outer end of the slot being enlarged as at 31 in Fig. 5, and in theA slot 30 is a slide block 32 which by means of a screw 33 is pivotally connected with the channel iron 34 which forms the second member of the extensible arm, and this member 34 connects with the door frame, the connection being preferably as shown in Fig. 1, that is to say, the slide block 35 is pivotally secured to the member 34 by means of the screw 3G, and this slide block slides in the channel slot 37 of the plate 38 which is secured to the door frame 10 on the under side of the upper part of the frame. The object of the slide block and connection between the member 34 and the plate 38 is to give additional travel to the member 34,

l* the door is opened, the friction block 32 will enter the widened part 31 of the slot 3() so that the members 2S and 34 buckle at the joint and will have sufficient friction to hold the door from closing of itself; but if a little additional force is applied to the door, the block will slide from the widened `part 31 into the main portion 30 of the slot, and the reaction of the spring 17 will then cause the door to close. The above action takes place because the meeting joint of the mem bers 2S and 34, as shown in Fig. 1, or 28a and 34?L as shown in Fig. 10, is not a very tight one, and when the door is opened wide and the extensible arm is fully extended, the tendency is for the arm to buckle in the middle and there is sullieient friction to cause the door toV stay open, unless it is first started slightly by hand. This only occurs when 'the door is opened wide. It will be seen that when the door is opened, the swinging of the'door against the action of the member 28 will twist and produce additional tension on 'the spring 17 so that the reaction closes the door.

Instead of the form of extensible arm just described, the parts may be modified somewhat as shown in Figs. 10 to 13, in which case the member 28a corresponding to the part 28 already described, is unslotted, but provided at its outer end with a T shaped friction block 39, having holes 4() and 41 therein by which it can be secured with screws to the part 28, and if one screw is inserted the block will be pivoted, but if two screws are inserted the block will of course be fixed. lNhether the friction block 39 is fixed or pivoted, depends on Whether or not it is desirable to have the door remain open until forcibly started t'o close, or it is desired to have the door close autothe channel iron of the member 34 is provided on the under side with an inturned flange which is relatively narrow for the greater partY of the length of the member 34, leaving a comparatively wide slot 43 in which the widest portion of thei'l" block 39 may slide, and a narrower slot 44 at the end which is adapted to receive only the stem portion of the block 39. 1f the block is in the position shown in Fig. 11, the T part of the block will slide in the slot and will be limited by the wall at the end of the slot, so that the door will close automatically, as there will be no binding effect; but if it is desired that the door shall remain open unless forcibly started, the block 39 is arranged as in Fig. 12, and the fastening screw is inserted only in the hole 41. This enables the stem of the T block to enter the slot 44, and when the door is opened the strain of the spring imparted to the memt on the outer part of the door, or on the f,

hinge or on the door frame, and to this end the gear 26 connects with a similar gear 45 on the door check, which is held in the cyl inder 13 already referred to. The gear 45 secured to the boss 46 of the hollow cam .A y

4T' which turns in the top of the cylinder 13, and the cam has downwardly converging opposite walls 48, giving to they cam when viewed in elevation, a cone shape as seen in Fig. 2. to ride onV the correspondingly shaped but oppositely pitched walls 49 of the hollow piston 50, which is arranged within the cylinder 13 and which is normally pressed upward by the spring' 51 arranged in the cylinder 13, which cylinder serves also as a well to'contain oil, or other liquid. The piston is perforated at the bottom as shown at 52 in Fig. 7, and this perforation is closed The walls 48 are adapted f more or less by a screw valve plug 53 which ""l* enters the perforation, but which is flattened and channeled at the lower end and on one side as at 54- (see Figs. 3 and 4) so that by adjusting the valve plug, a greater or less l being held in place by a spring 56. This form of check is adapted for use on a door whether the door swings only to one side of the opening in the door frame, or whether' it swings both ways as is sometimes the case, as one of the walls 48 is sure to connect with one of the walls 49 of the piston. It will be noticed that when the piston 50 rises, the liquid in the well can flow back freely past the valve 55, but when the piston is forced down against the tension of the spring 51 and against the liquid in the well, the liquid can only pass upward through the perforation 52 which is regulated by the valve plug 53 already referred to. lVhen the door is opened, the cam 47 will be turned so that the apex of the cam will be out of contact with the apex of the piston, and the piston 50 will be in its raised position; but as the door is closed by the spring' 17, the cam 47 rides upon one of the cam walls 49 of the piston 50, and the latter is forced downward, a rapid motion being prevented because of the' spring 51, and the further fact that the liquid in the well must pass up through the perforation 52, so that an easy movement is provided. If desired the top or apex of the piston 50 can be flattened or cut in as at 57 in Fig. 8, and this relieves the tension just as the door closes, and permits it to close with a quick freer movement so as to make sure that the door latches. Further, if the indentation is used as shown in Fig. 8, the apex of the cam 47 will enter the indentation 57 and serve to check the door in case the latter is a double swinging door, that is one which swings both ways from the center, and prevent the door from flapping.

From the foregoing description it will be seen that I have devised a simple and efficient door check and spring which are used in combination, which are hidden in the door, and that very little of the apparatus is exposed, in fact only the extensible arm when the door is open, and not at all when the door is closed.

It will be understood that the details of construction shown can be departed from, without affecting the principle of the invention.

I claim 1. The combination with a swinging door and its frame, of a spiral spring sunk in the door top, an extensible and swinging arm connected at one end with the spring and at the opposite end to the door frame, a door check sunk in the top of the door, and a gear connection between the spring closing mechanism and the door check, whereby the door check retards the action of the spring.

2. The combination with the swinging door and its frame, of a door closing spring sunk in the top edge of the door, an extensible connection between the spring and the door frame, a door check sunk in the top edge of the door, an operative connection between the door check and the` aforesaid closing spring, whereby the action of the check retards the action of the spring, and means in the door check for additionally checking the door when the latter is in closed position.

3. The combination with a swinging door and its frame, of door closing and checking mechanism located in the top edge of the doory and operatively connected together, and an extensible and swinging connection between the door closing and checking mechanism and the door frame, said connection comprising telescoping members, one connected with the closing and checking mechanism, and the other with the door frame.

4. The combination with a swinging door and its frame, of door closing and checking.

mechanism located in the top edge of the door and operatively connected together, an

extensible telescoping arm connecting the` 6. The combination with a swinging doorl and its frame, of means for closing the door, a slotted member connecting with the top edge of the door, a second member connected with the slotted member and also with the d oor fra-me, and a slide block supported on the second member and sliding in the slot of the aforesaid slotted member.

7. The combination with a swinging door and its closingmeans, of an extensible arm connecting the top edge of the door with the door frame, said extensible arm comprising a slotted member, a portion of the slot being enlarged, a second member sliding in relation to the slotted member, and a slide block carried by the second member andV fitting in the slot of the first member.

8. The combination with the swinging door and its frame, of the spiral spring and door check sunk in the top of the door and operatively connected together, the extensible arm connected with the spring and with the door frame, a slotted plate on the door frame, and a slide block secured to the extensible arm and sliding in the slot of the aforesaid plate.

9. The combination with a swinging door and its frame, of connected means for closing and checking the door, said means bei ing located in the top edge. of the door, and an eXtensible arm connecting the checking and closing means With the door frame, saidarm comprising a longitudinally slotted member connected With the closing and checking mechanism, a channel iron connected with the door frame and receiving the slotted member, and a slide block supported on the channel iron and running in the slot of said slotted member.

10. T he combination with a swinging door and its frame, of means located in the top of the door for closing the door, an eXtensible arm connecting the top edge of the door with the door frame, a check located in the top of the door to retard the closing` means, and means in the check for permitting an door.

CLARENCE T. ROGERS. Witnesses:

WARREN B. HUTCHINSON, M. G. ODONNELL.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

